Have you ever had a problem with the TV where the screen does not display any picture even when it’s turned on? In such cases, the problem might indicate damage to the backlight of the TV.
As the name suggests, “backlights” are the light sources to our TV screen; no light source results in no viewable picture on the screen.
Backlight damage is most likely caused due to problems in two essential components that make up the backlight:the Backlight Driver Board/Powerboardor theactual Backlight strips.
Do not worry; it is easier to fix than it looks. We will tackle each issue in an orderly fashion so that you may fix your TV without spending a lot of money.
Possible Causes of Backlight Failure
The backlights damage is caused due to the following possible reasons.
Backlight Failure Symptoms
How to Fix Backlight on TV?
The Backlight issue only occurs in LED TVs as QLED and OLED TVs do not have backlights. LCD TVs used backlights made up of fluorescent bulbs, but their production has now been stopped as the technology is outdated.
Things to Consider Before Testing & Repair
Once the above considerations are factored in, open up the back cover of the device and start the testing & repair process.
Step 1: Test the Power Supply Board & Led Strips
Most TVs feature the led driver on the powerboard itself, but some have a separate led driver board. Find the exact connection point where the backlight cable connects to the board.
Things to Consider Regarding the Testing Area
Start testing the Connection Points
